Bake-oven



(No Model.) 4 Sheets-Sheet 1.

J; MIDDLE-BY.

BAKE OVEN.

N0. 522,Q'75. I Patented June 26, 1894.

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(Nq Model.)

4 SheetsSheet 2; J. MIDDLEBY.

BAKE OVEN.

T2 Patented June 26, 1894.

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(No Model.) J. MIDDLEB'Y. 4 Sheets-Sheet 3.

BAKE OVEN.

No. 522,075 I Patented June 26, 1894:.

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(No Model.) 4 Sheets-Sheet 4.

J. MIDDLBBY.

BAKE OVEN.

Patented June 26, 1894.

mm" y 7 II'I' III l' .snnurlnmn ll H i .illllllIHH iilllllmlllllliz UNITED STATES PATENT Fumea JOSEPH MIDDLEBY, OF BOSTON, MASSACHUSETTS.

BAKE-OVEN.

SPECIFICATION forming part of Letters Patent No. 522,075, dated June 26, 1894.

Application filed January 26, 1893- Serial No. 459,872. No model.) I

To aZZ whom it may concern:

Be it known that I, JOSEPH MIDDLEBY, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Bake-Ovens, of which the following is a specification.

This invention relates to an improvement in bake-ovens, the object being to provide a commodious double oven, throughout which the heat will be equally distributed; to provide a construction whereby the parts may be readily fitted together; to make provision for hearth-baking, and to provide for readily gaining access to the fines, for the purpose of cleaning or removing them.

Of the accompanying drawings, forming part of this specification: Figure 1 shows a perspective view of the oven. Fig. 2 represents the oven as bisected, making two sectional views in perspective, one looking toward the front of the oven, and the other,

looking toward the rear. Fig. 3 shows a longitudinal section. Fig. lshows a fragmentary horizontal section, on line 4-4 of Fig. 3. Fig. 5 shows a detail perspective of castings which form a union, connecting the fines of the oven. Fig. 6 shows a section on line 6-6 of Fig. 3.

The same letters of reference indicate the same parts in all the figures.

In the drawings: The reference letter a designates the outside casing of the oven, which is made of sheet metal, and supported on four legs I), braced by straps c, which are bolted to the legs and to a flange d on the said outside casing. Within the casing is a lining e, also of sheet metal, and a'fillingof asbestus f is interposedbetween the said lining and the outside casing, leaving a dead air-space f all around. An ash-pit 9 stands on the floor below the front part of the oven, and a fire-pot gis supported on this ash-pit, suitable grate-bars 9 being provided in the bottom of the fire-pot. A horizontal plate h is supported above the fire-pot, and has an opening over thelatter; a transverse deflectorplate h is fastened on the upper surface of the said horizontal plate h, by means of ears h formed on said transverse deflector-plate and bolts h extending through said ears. A hearth i, composed of tiles, is supported above the horizontal plate h, and rests on the transverse plate h which serves to su pportits rear end.

Horizontal fines j extend along the bottom of the oven, their forward ends fitting over flanges j formed on the rear side of a casting 7' which fits against the back of the hearth i.

The horizontal fines j are made in sections, to facilitate their ready removal, and the sections are united by means of fluted straps above and below them. .These straps are connected at one side, by means of an opening in one, which is engaged by a lip 70' on the other, thus forming a hinge. These straps engage the surfaces of all the fine-sections, and abut between the flnes. Their ends opposite the hinge are connected by means of a pin k It will be seen that, by removing this pin, the upper fluted strap may be raised on ,the hinge, and any one of the flue-sections then easily removed. Cement will be insorted between the ends of the flue-sections to form a tight joint.

The horizontal fines j connect with a union fitting in the lower rear corner'of theoven, said union consisting of a casting having the form of a rectangular box, bisected longitudinally. This casting thus consists of two parts Z Z, the front one Z' of which has a series of oval flanges Z? to receive the ends of the horizontal fines j, and aseries of semi-oval flanges Z on the upper side. The rear part Z of the casting hasa similar series of semi-oval flanges Z on the upper side, and the two portionsZ and Z are fitted together and secured by bolts Z and, when thus secured together, the semioval flanges on the upper sides of the two parts of the casting fit together and receive the lower ends of a series of vertical fines m, whose upper ends fit over flanges m of an upper casting n of the same construction as the casting Z Z, only reversed. A series of horizontal flues n have their rear ends fitting over flanges n of the casting n, and their forward ends connect with a union located at the front part of the oven, and composed of two sections 0, having the form of thesection Z of the union casting already described. These two sections 0 are bolted together, so as to form a three-way union, one branch of which fits through the front of the oven and is closed by a removable plate 19, fastened by IOO ' gained to the flues, for the purpose of clean ing the same. A series of vertical flues q is connected to the upwardlyextending branches on the union 0, and their upper ends fit over flanges of a casting r, secured to the top of the oven. A box sis fastened above the top of the oven, and all the vertical fines q communicate through the casting r with said box, on which a stack 15 is mounted, to carry off the products i with semi-oval flanges on one side; substanof combustion.

Gratings nu are supported above the horix zontal flues j and 01. and the matter to be baked in the oven will be placed on these, gratings.

The tendencyof the heated air to rise may has risen to the top of the oven, may be conducted out into the stack 25. The products of combustion rising from the 1 fire-pot g first strike the hearth 2', and, as this ,1

hearth is composed of tiles, as previously ex- 5 plained, there is no danger of its burningout. j; The products of combustion are deflected laterally by the transverse plate h',:and are there- 1 by distributed equally to the set of horizontal fiuesj, and pass through the same, and then up the vertical flues m at theback of the oven, and then into the flues 11. by which they are conducted to the front of the oven, where they 1 passinto the vertical flues g, by which they'are 1 conducted to the stack 25. By this arrange- 3 ment of flues and manner of conducting the products of combustion, the oven will be uniformly heated throughout, so that matter on the gratings it and it will be equallybaked.

Hearth-baking may be accomplished on the i tiles i, such as the baking of Dutch bread and g the like.

Suitable doors y are provided on one sidei of the oven, by which to gain access to both the upper and lower parts of the oven. Doors z and a: are also provided at the front of the j take flue, leading from the top part of the zontal plate; a hearth resting on said deflec tor-plate; and flues, whose ends open in front of the deflector plate in the manner described.

2. In a bake-oven, the comblnation of a series of flues composed of sections; and fluted straps uniting said sectionsand connected at one end by a hinge and at the other by a detachable fastening.

3. In a bake-oven, the combination of two sets of horizontal flues; vertical flues connecting the same; vertical flues leading to the stack; and unions uniting the flues and composed of castings of two patterns, one of rectangular box-like form having oval flanges on one side to receive the flue-endsand a series of semi-oval flanges on a side at right angles to said first-named side, and the other pattern being of a rectangular box-like form tially as described.

4. In a bake-oven, the combination of aset of horizontal flues, whose ends open out of 1 the front of the oven; and a plate or plates closing the said lines and detachablysecured to the front of the oven.

5. In a bake-oven, the combination of a fire-pot at the front of the oven; a hearth.

above said-fire-pot; a set of separate horizontal flues extending along the bottom of the oven and having their front ends opening below said hearth; a set of separate vertical flues extending along the back of the oven and communicating with the said horizontal flues; a second setof separatehorizontal flues communicating with the vertical flues and extending to the front of the oven; a set of separate vertical flues communicating with the front ends of said second set of horizontal flues; a box on the top of the oven and communicating with said last-named set of vertical flues; and a stackon said box.

In a bake-oven, the combination of a fire-pot at the front of the oven; a hearth above said fire-pot; a set of separate horizontal flues extending along the bottom of the oven and having their front ends opening below said hearth; a set of separate vertical flues extending along the back of the oven and communicating with the said horizontal flues; a second set of separate horizontal flues communicating with the vertical flues and extending to the front of the oven; 2. set of separate vertical flues communicating with the front ends of said second set of horizon tal flues; a box on the top of the oven and communicating with said last-named set of vertical flues; a stack on said box; and an offoven into the said stack and provided with a damper, for the purpose described.

In testimony whereof I have signed my name to this specificatiomin the presence of two subscribing witnesses, this 17th day of January, A. D. 1898.

JOSEPH MIDDLEBY.

Witn esses:

A. D. HARRISON, F. PARKER DAVIS. 

